2010 Street Stock Rules

Updated as of 2/1/10

Notice: All components are subject to inspection and approval of Track Officials. No equipment will be considered as having been approved by reason of having passed through inspection unobserved. ALL RULES WILL BE INTERPRETED BY TRACK OFFICIALS. IF YOU HAVE ANY QUESTIONS ABOUT RULES, CALL BEFORE BUILDING CAR.

DRIVER RESTRAINT:

1. Aluminum racing seat is required, with rib supports recommended. Seats must be securely mounted to chassis, not floor pan, with a minimum of four 3/8" bolts. Seat may not be positioned further back than doorpost.

2. 5 point safety harnesses are required. Required: S.F.I. tag must be legible. Must be bolted to the roll cage and frame with a minimum bolt size of ½ inch bolts.

3. A window net is Mandatory. No sprint car nets.

4. All helmets must be a full face, current Snell 90 or newer sticker in it. Snell SA90 & SA00 legal.

5. All drivers are required to wear a driving suit. No nomex coveralls will be allowed. Neck brace are mandatory for drivers. Driving gloves and driving shoes are required.

Minimum weight allowed is 3300 pounds after feature race with driver in car. With aftermarket body weight will be no less than 3350lbs. Any ballast added to the car must be painted white with the car number on it and must be securely welded or bolted to the frame. No tie straps may be used. No liquid Ballast.

Only full frame, American made cars or full-size Uni-body cars with a stock wheelbase of one hundred-eight inches or more will be allowed. Trucks allowed. Stock as OEM produced for year/make/model body. Frames may not be altered in any way. Must be absolutely stock.

All glass, chrome, and upholstery must be removed. Tops may be removed to install the roll cage, but the top must be replaced in the stock location. Doors can be cut out for door bars. Trunk area may be cut to allow for mandatory fuel cell. The fuel cell must be a steel container with a two (2) inch by one-eighth (1/8) inch steel strap on each side, to securely mount the fuel cell. Body must be mounted in stock location. No exposed tubing or braces outside of the bodyline of car. Body may be stock appearing or aftermarket. If running aftermarket body, must add 50 lbs. to total car weight. Plastic or aftermarket noses are allowed but cannot be the Late Model slope aerodynamic type nose. Nose must be stock appearing for make of car.

Spoiler max height is 6” and must be attached to trunk only

A competition-type four (4) point roll cage is required and must be constructed with tubing that is a minimum of one and one-half (1-½) inches in diameter, with a minimum of 0.095” wall thickness. A minimum of three (3) horizontal door bars is required in the driver’s door. A minimum of three (3) horizontal door bars is required for the passenger side of the car. Three (3) driver protection bars are required in the windshield, ahead of the driver with a screen. You may run front and rear bars through the stock firewall, with one (1) kicker bar going to the frame. A radiator protection bar is optional.

A single nerf bar is allowed on each side. Maximum size 1.5” x .095”. May be attached to main cage only at the front and rear section of the nerf bar. This means only two (2) attachment points are allowed. No open tubing allowed. Tubing must be capped or rounded with no sharp edges. Nerf bars are allowed on the rear outside quarter panel area. Nerf bars may not extend outside of tires.

Front and rear bumpers required. Stock or fabricated will be allowed. No sharp edges. Front bumper may not extend beyond inside tire width except cars with nosepieces. Fabricated bumpers may be no more than 1.75" ODx.125 wall round tube or 2x3x.125 wall rectangle. Fabricated bumpers must be capped at ends. All cars must be equipped with tow hooks or a small chain loop, front & rear, easily visible and accessible for quick hookup.

ENGINE SPECS:

Maximum of 364 cubic inches. Ford, Dodge, and GM are allowed
Only cast iron OEM production blocks allowed. NO bowtie, Dart, Little M., Ect.
GM chassis – GM block
Ford chassis – Ford block
Dodge chassis – Dodge block
ANY cast or steel crankshaft allowed with a 50 lbs minimum weight limit. After market fluid dampeners allowed
ANY steel connecting rod allowed. Aluminum rods PROHIBITED.
Pistons may be flat top (2) valve relief or OEM equivalent. NO domed pistons! Cast or forged OK. Any type pistons rings allowed. Must have a minimum of (2) compression rings and (2) oil ring. Floating wrist pins are allowed. NO titanium. Engine block permitted a minimum of .0 deck clearance. Piston must not hit straight edge held over cylinder while engine is cranked with starter.
Any camshaft: solid or hydraulic. NO rollers or mushrooms. NO oversize lifters.
NO dry sump oil systems or vacuum pumps.

Note: Casting numbers must remain in cylinder head or head is illegal. Retains to manufacturer, part # and intake port runner size. Also, NO o-ringing of block to mate head gasket with block and head.
Any 23 degree heads cast iron ONLY. NO more than 200cc on intake runners.2.02 intakes and 1.60 exhaust valves maximum.
NO acid dipping, porting or polishing. Heads maybe flat or angle milled.
Screw in studs, pinning and guide plate allowed. NO titanium, valves or components.
Any work done in the bowl area must be done with a 360 degree cut, with the valve guide as the center point.
Full roller rocker arms are allowed. Roller tip rocker arms are allowed. Polylocks are allowed. Stud girdles are allowed.
NO Jessel or similar allowed.
NO aluminum or titanium is allowed.
Any breather/valve cover combination is allowed.

Minimum engine height is 10” from the ground to the center of the crankshaft. This will be measured on the front of the crankshaft/pulley.
ENGINE SETBACK is #1 spark plug even with ball joint or forward.
Side engine mounts may be 45-degree style, steel ONLY. Rear motor plates allowed.
Firewall setback is allowed.

The 4412 Holley 2 BBL, Holly 3310 4 BBL with vacuum secondary, Rochester 2 BBL. No dual line double pumpers. The choke blade may be removed, but the original choke tower must be retained. No other modifications. Aftermarket air filters will be allowed. Aftermarket fuel pumps will be allowed. All pumps must mount in stock location. Cross member may be notched for fuel pump clearance only.

Aftermarket cap, coils, rotor, plug wires, etc will be allowed. No electronic traction control devices. MSD boxes allowed.

1. All cars must have an ignition switch clearly labeled.

2. The car must also have a battery disconnect switch located outside the car and easy accessible to emergency personnel. If the car is equipped with a working alternator the switch must disable alternator as well.

3. Only 1 twelve-volt battery is allowed. Battery and box must be securely mounted and enclosed if in driver's compartment or trunk.

Aluminum radiators are allowed. Radiator cannot mount higher than hood or extend through hood. Electric fans are allowed. Protective loop allowed no taller than radiator and no wider than frame.

Gasoline only. Pump or Race gas will be allowed. No methanol, nitro-bearing additives or any other exotic additives or fuel. NO nitrous oxide.

No exhaust through body panels or fenders. Maximum of 3 ½ OD. No 180 degrees headers or over the top of engine exhaust allowed. Mufflers Mandatory! Track approved mufflers are SCE 63030, SCE 83030, or IMCA 609. Cars must register no more than 100 dB at 100 feet. All exhaust must go through muffler. Two mufflers per car, one per header.

Leaf, composite leaf spring are allowed, coil, or torsion bar as OEM produced for year/ make/ model body. Racing springs will be allowed. Coils must be minimum 4.5" outside diameter. No coil overs. All springs must mount in stock location. One spring and shock per wheel. Spring spacers or lowering blocks for ride height adjustment will be allowed. Steel body racing or stock shocks will be allowed. No air shocks. Weight jacks, and rear leaf spring slider or shackles will be allowed. No cockpit operated shock or spring adjustment devices. All other suspension components must be as OEM produced for make and model and in stock location. No fabricated or aftermarket traction devices or suspension components. Upper control arms may be aftermarket.

OEM steering gearbox in stock location for frame used. Drag link, tie rods, etc., must be stock for make and model, and in stock location. Quick steer boxes will be allowed. Aftermarket pump will be allowed. Aftermarket steering wheel with disconnect will be allowed. Driver must sit in left front quadrant of racecar, no further back than doorpost

Automatic or standard on any car. Driver must be able to put car in forward, neutral, and reverse while running. Automatic: must have working torque converter. Transmission cooler is allowed and may be attached to cage. Blanket or flex plate shield mandatory. Standard: OEM produced manual 3 or 4 speed. Scatter shields or blow proof bell housing mandatory. No Aluminum bell housing allowed! Direct drive and mini clutches are allowed. No Aluminum Flywheels.

Minimum 2" diameter steel drive shaft, must be painted white with car number, and must have drive shaft loop mounted 6" back from front U-joint.

Must be locked, spool or mini spool recommended. Aftermarket axles will be allowed. 9" Ford under any body will be allowed. No limited slips such as Gold-Trac, Detroit Locker, Etc. Floaters will be allowed.

Must be steel approved OEM, operative four wheel, drum or disc. Front components must match vehicle. Must maintain OEM dimensions for Hubs/rotors and calipers, cannot be lightened. Bolt pattern may be changed. Larger studs allowed. Rear rotors may be aftermarket, min. 0.810-inch thickness. Vented rotors only, no scalloped rotors. No floating brakes. No brake shut-off or pressure sensitive devices, with minimum of three (3) wheel brakes in good working order. Four (4) wheel brakes are recommended.

One proportioning device allowed, front to rear only. Brake lines must be visible. Aftermarket pedal assemblies are allowed.

Racing fuel cells are required. No boat or stock automotive fuel tanks. Must be securely fastened inside trunk of car above level of stock trunk floor, by at least two steel straps no smaller than 1/8" by 1". A protective loop around fuel cell is mandatory. Trunk floor and wells must have drain holes cut so as not to allow spilled fuel to be trapped in trunk area.

Asphalt pull-offs or the kk704 allowed. NO E-MOD Tires allowed.

Steel racing wheels up to eight (8) inches maximum width are allowed. (10) inches wheels will be allowed with Asphalt pull off only. No aluminum or mag wheels or homemade wheels are allowed. One (1) inch lug nuts are mandatory on both sides of the vehicle. Bead locks are allowed on right side (driver option)

Numbers on cars must be located on both doors, the roof, and on the back. They must be in a color, which contrasts with the color of the car. Numbers on the doors must be 24” tall and 4” wide. Numbers on the roof must be 28” tall and positioned to be read from the passenger side. Numbers on the back must be 6” for the following driver to be able to read. Numbers with letters will be accepted. Numbers must be easily read by scorekeepers to insure proper placing.